Add in unplug IO count histogram

[blktrace.git] / btt / args.c

diff --git a/btt/args.c b/btt/args.c
index 7a4a5fdbe3b113462b58a1141c505a50a8cf464c..9e918c9524fac6cf070bc2ced7194572f0020fad 100644 (file)
--- a/btt/args.c
+++ b/btt/args.c
@@ -29,7 +29,7 @@
 
 #define SETBUFFER_SIZE (64 * 1024)
 
-#define S_OPTS "aAB:d:D:e:hi:I:l:M:o:p:q:s:S:t:T:Vv"
+#define S_OPTS "aAB:d:D:e:hi:I:l:M:o:p:q:s:S:t:T:u:Vv"
 static struct option l_opts[] = {
        {
                .name = "seek-absolute",
@@ -139,6 +139,12 @@ static struct option l_opts[] = {
                .flag = NULL,
                .val = 'T'
        },
+       {
+               .name = "unplug-hist",
+               .has_arg = required_argument,
+               .flag = NULL,
+               .val = 'u'
+       },
        {
                .name = "version",
                .has_arg = no_argument,
@@ -175,6 +181,7 @@ static char usage_str[] = \
        "[ -S <interval>    | --iostat-interval=<interval> ]\n" \
        "[ -t <sec>         | --time-start=<sec> ]\n" \
        "[ -T <sec>         | --time-end=<sec> ]\n" \
+       "[ -u <output name> | --unplug-hist=<output name> ] \n" \
        "[ -V               | --version ]\n" \
        "[ -v               | --verbose ]\n\n";
 
@@ -280,6 +287,9 @@ void handle_args(int argc, char *argv[])
                        sscanf(optarg, "%lf", &t_aend);
                        time_bounded = 1;
                        break;
+               case 'u':
+                       unplug_hist_name = strdup(optarg);
+                       break;
                case 'v':
                        verbose = 1;
                        break;